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Lattice dynamics of thallous chloride

Динамика решетки хлорида таллия

  • Published:
Il Nuovo Cimento B (1971-1996)

Summary

An extended three-body force shell model (ETSM) developed by Singh and Gupta has been applied to investigate the role of three-body forces in lattice-dynamical descriptions of thallous chloride. The results on phonon dispersion, Debye-temperature variations and two-phonon infra-red spectra for TICI have been computed and found to agree reasonably well with the available experimental data. Since the properties of this solid are less explored, therefore, the present results might be of academic interest to guide the experimental workers.

Riassunto

Un modello a strati esteso della forza a tre corpi (ETSM) sviluppato da Singh e Gupta è stato applicato allo studio del ruolo di forze a tre corpi in descrizioni del cloruro di tallio secondo la dinamica reticolare. I risultati sulla dispersione fononica, le variazioni della temperatura di Debye e gli spettri a due fononi nell'infrarosso per TICI sono stati calcolati e si è trovato che essi concordano ragionevolmente bene con i dati sperimentali disponibili. Poichè le proprietà di questo solido meno studiate, i risultati attuali potrebbero avere un interesse accademico nel guidare gli sperimentatori.

Резюме

Оболочечная модель трех-частичных сил, развитая Сингхом и Гуптой, применяется для исследования роли трехчастичных сил в динамическом описании решетки хлорида таллия. Вычисляются дисперсия фононов, изменения температуры Дебая и двух-фононные инфракрасные спектры для TlCl. Полученные результаты хорошо согласуются с имеющимися зкспериментальными данными. Так как свойства этого вещества недостаточно исследованы, то результаты этой работы могуг представлять акакемический интерес для развития экспериментальных исследований.

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Authors and Affiliations

  1. Department of Postgraduate Studies and Research in Physics, University of Jabalpur, 482001, Jabalpur, India

    R. K. Singh, H. N. Gupta & S. P. Sanyal

  2. Physics Department, N.R.E.C. College (Meerut University), 203131, Khurja, India

    H. N. Gupta

Authors
  1. R. K. Singh
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  2. H. N. Gupta
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  3. S. P. Sanyal
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Singh, R.K., Gupta, H.N. & Sanyal, S.P. Lattice dynamics of thallous chloride. Nuov Cim B 60, 89–96 (1980). https://doi.org/10.1007/BF02723070

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  • DOI: https://doi.org/10.1007/BF02723070

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